It would make a great solar-reflective color for non-a/c applications...

WINNER WHITE

Haha...Winner White. Love it.

Also an excellent point on the solar reflectivity for non-A/C

The bad news is you would have to clear film wrap pretty much the whole car if you plan to track it (as I would), otherwise cleaning the clag off of it would be a never ending job. With that said, that color with clag streaks would have an interesting look...like this: